Year	% of children ages 12-23 months
1980	13
1981	17
1982	15
1983	13
1984	20
1985	21
1986	55
1987	57
1988	58
1989	59
1990	53
1991	54
1992	57
1993	57
1994	64
1995	58
1996	61
1997	51
1998	65
1999	79
2000	84
2001	88
2002	91
2003	96
2004	90
2005	89
2006	88
2007	86
2008	92
2009	93
2010	88
2011	96
2012	92
2013	87
2014	89
2015	95
2016	94
2017	83
2018	89
2019	79
2020	74
2021	75
2022	69